Clearer for drawing-rolls.



No. 637,040. Patented Nov. l4, I899.

c. E. SMITH.

CLEARER FOR DRAWING ROLLS.

(Application filed Sept. 1, 1899.)

1N0 Modal.)

Is PETERS o0. Pno m-umm wxsmnmon n c UNITED STATES PATENT ()FFICE.

CYRUS E. SMITH, OF FALL RIVER, MASSACHUSETTS.

CLEARER FOR DRAWING-ROLLS.

SPEGIFICATION forming part of Letters Patent No. 637,040, dated November 14, 1899.

Application filed September 1,1899. Seria1No. 7 29,21Q. on model.)

T0 aZZ whom it may concern.-

Be it known that I, CYRUS E. SMITH, a citizen of the United States,residin g at Fall River, Massachusetts, have invented an Improvement in Olearers for Drawing-Rolls, of which the following description, in connect-ion with the accompanying drawings,isaspecification, like letters and figures on the drawings representing like parts.

This invention relates particularly to draw ing-frames; and it has for its object the production of means for clearing or cleaning the drawing-rolls from fluff or lint, so that it is unnecessary to stop the frame from time to time and clear the rolls. The rolls collect fiuif and lint rapidly, and it is now the practice to employ an attendant Whose duty it is to clear the rolls by hand, which necessitates their stoppage in order to obtain access thereto.

By my invention the surface of the rolls is kept clean at all times, a clearer traversing the length of the rolls and bearing with sufficient pressure upon them to keep them clean.

When the rolls are stopped, as upon breaking of an end, the pressure of the clearer thereupon is increased automatically, thoroughly clearing the flutes of the rolls.

Figure 1 is a transverse sectional view of a sufficient portion of a drawing-roll stand of a drawing-frame to be understood. Fig. 2 is a rear elevation, on a smaller scale, of the frame near one end, showing the usual belt-shipper forming a part of the roll stop-motion, the traverse and controlling means for the clearer being shown. Fig. 3 is an enlarged top or plan View of one of the clearers in place on the supporting-arm attached to the traversing rock-shaft, and Fig. 4 is an under side view of the clearer-stand with the fixed and adjustable clearers thereon.

The main frame A, the drawing-roll stands B, having suitable bearings for the roll-journals, the top rolls 1), the lower drawing-rolls b, the main driving-shaft A, the pulley A fast thereon and connected by a belt A with either the fast or loose pulleys B 13 on the roll-driving shaft B, and the belt-shipper 13 on the sliding bar B forming a part of or connected with the usual stop-motion device, are and may be all of usual or Well-known construction in drawing-frames, the stop-motion operating upon the breaking of an end to shift the belt from the fast to the loose pulley to stop the rotation of the rolls on that side of the frame.

I have herein shown the lower drawing-rolls as longitudinally fluted, as such rolls are now in very general use, and in the practical running of slubbing or drawing frames it is neccessary to very constantly clean or clear the lower rolls from the fluff or lint which collects upon them, the rolls being stopped for this purpose while an attendantcleans them,every such stoppage of course reducing the output of the frame; and it is the object of my invention to provide simple and effective clearing means, particularly for the lower rolls, which will obviate the necessity of stopping the machine to clear the rolls.

, In the present embodiment of my invention I have shown a rock-shaft O, mounted to rock and also to slide in bearings C on'the main frame, one of such bearings being shown in Fig. 1, the rock-shaft being located below and in front of the drawing rolls and parallel thereto and provided with upwardly and rearwardly extended arms 0, provided each with an upturned pin or projection 0, (see Figs. 1

and 3,) the arms extending one beneath each set of rolls, as shown best in Fig. 2. One or A more extended arms Gifast on the rock-shaft,

are weighted at their outer ends and act as counterbalances to maintain-the rocker-arms C forced up toward the lower rolls. The rockshaft has depending therefrom a rigid leg 0 which at its lower end is connected with a reciprocating rod 0 mounted in suitable bearings on the frame and'reciprocated in any suitable manner to effect the traverse of the rock-shaft O longitudinally of the'rolls.

I have herein shown one simple form of mechanism for reciprocating the rod 0 the same comprising a worm-wheel 3 in mesh. with and driven by a worm 4 on the main driving-shaft A, the shaft 5 of the wormwheel having a crank 6 fast thereon connected by a link '7 with the rod 0 the rotation of the worm-wheel moving the rod back and forth, and it will be noticed that as'the wormwheel is driven from the main shaft of the machine the reciprocation will continue so long as the main shaft is running whether the rotation of the rolls is stopped or not.

I have herein shown the clearers proper as mounted in pairs on stands or plates 0 each plate being provided with a V-shaped notch c to receive the stud c on the rocker-arm, the said stud forming a fulcrum about which the stand may slightly rock or position itself, as will be explained, the upper side of each plate having attached to it two blocks 0 0 substantially triangular in cross-section and with their u pwardly-converging sides covered with felt or other suitable yielding material 0 forming clearers.

I prefer to mount one of the clearersas, for instance, c rigidly on the stand or plate e as by attaching-bolts 25, (see Fig. 4,) while the other clearer is adjustably connected with the stand by bolts or screws 30, extended through slots 32 (see Fig. at) in the legs of the stand or plate, so that the distance between the clearers can be regulated according to the distance between the rolls, the clearers being parallel to each other.

I so arrange the clearers that they will enter between two adjacent rolls, as clearly shown in Fig. 1, and for three or four of the rolls I thus provide a stand with two clearers, the yielding inclined surface 0 of each clearer resting against and substantially taugential to the adjacent roll, so that as the clearers are reciprocated longitudinally of the rolls the yielding surfaces will wipe over the rolls from one to the other end thereof, effectually clearing them from fluff or lint, the counterbalancingarms 0 holding the clearers against the rolls with suflieient force to effect this purpose.

The clearers or stands 0 have a slight pivotal movement about their supporting-studs c, and they are positioned by the rolls.

The traverse of the clearers is kept up so long as the main driving-shaft is running; but when the rolls are stopped, as by the stopmotion mechanism, I prefer to increase the pressure of the clearers upon the rolls in order that the flutes may be thoroughly cleaned or cleared. I have herein shown means for increasing automatically this pressure, such increase being controlled by or through the stoppage of the drawing-rolls.

A weighted arm IV (see Fig. 2) is pivoted on the main frame at 10, and is connected at its free end, by a pivotally-attached link to, with an arm 0 fast on the clearer-supporting shaft 0, the weight of the arm IV being suflicientwhen operative to press the clearers with considerable force against the rolls. The weight is provided with a hook-like lug 10', (see Fig. 2,) which is normally engaged by a dog w fast on the bar B of the stopmotion and held in dotted-line position, Fig. 2, when the belt is on the fast pulley, so that the weighted arm \V will not act upon the rock-shaft. hen, however, the stop-motion operates to shift the belt from the fast to the loose pulley, the bar B moves the dog w into the position shown in full lines, Fig. 2, releasing the arm IV and permitting its weight to act upon the rock-shaft O, turning the latter to press the clearers firmly against the rolls. When the belt is again transferred to the fast pulley, the dog lifts the weighted arm into normal inoperative position, the upper face of the dog being inclined or camshaped to readily pass under and lift the lug w.

Manifestly it is undesirable to put any unnecessary drag upon the rollers when they are in motion, and for this reason the pressure of the clearers on the rollers is only sufficient to properly clean the latter; but when the rolls are at rest an opportunity is afforded to rub them more vigorously, and I take advantage of such stoppage to increase the pressure of the clearers upon the rolls.

Any desired form of traverse mechanism may be employed to efiect the movement of the clearers longitudinally of the rolls, and so, too, any other suitable form of device may be employed for normally maintaining the controlling-weight inoperative, the release of the weight being controlled by or through the stopping of the rolls.

Having described my invention, what I claim, and desire to secure by Letters Patent, 1s

1. In an apparatus of the class described, drawing-rolls, a clearer to act upon the rolls and remove flutf or lint therefrom, mechanism to effect reciprocation of the clearer longitudinall y of the rolls, and means operative upon stoppage of the rolls to increase automatically the pressure of the clearer upon the rolls.

2. In an apparatus of the'class described, drawing-rolls, a clearer to act upon the lower rolls and remove fluff or lint therefrom, mechanism to effect reciprocation of the clearer longitudinally of the rolls, a stopping device for the rolls, and means controlled by said device to increase automatically the pressure of the cleareron the rolls when rotation of the latter is stopped.

3. In. an apparatus of the class described, drawing-rolls, a rook-shaft having a clearing device thereon for the lower rolls, means to reciprocate the rock-shaft longitudinally of the rolls, a normally-inoperative weight to rock the shaft and increase the pressure of the clearing device on the rolls, and means controlled by or through stoppage of the rolls to release the weight.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

CYRUS E. SMITH.

Vitnesses:

ARTHUR G. SQUIRE, EUGENE E. SMITH. 

